Nikon D810A vs Canon EOS 300D

This is a full comparison between the cameras Nikon D810A and Canon EOS 300D. We compare them by looking at the categories you see below.


Nikon D810A is manufacturered by Nikon but Canon EOS 300D is from Canon. Both Nikon and Canon are well known brands though.

Nikon D810A were released 2015 and Canon EOS 300D was released 2003. That is a 12 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Nikon D810A 2015
Canon EOS 300D 2003

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Nikon D810A has a "FX"-sensor while Canon EOS 300D has a "APSC"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera Focal length, 50mm f/1.8 **
Nikon D810A 50 mm
Full-frame sensor
No crop factor/focal length multiplier
Canon EOS 300D 80 mm
Canon APS-C sensor
Crop factor/focal length multiplier by * 1.6

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Nikon)
Camera selection can affect the focal length (Canon)


Nikon D810A has a 36 MP (Megapixels) resolution while Canon EOS 300D has 6,3 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Nikon D810A 36 MP
36152320 pixels
7360 x 4912
Canon EOS 300D 6,3 MP
6291456 pixels
3072 x 2048

Nikon D810A has a 475 % larger resolution than Canon EOS 300D. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Nikon D810A has a larger ISO-range than Canon EOS 300D. Nikon D810A has an ISO range that stretches from 200 to 12800 while Canon EOS 300D has 100 to 1600.

Camera ISO Range
Nikon D810A 200-12800
Canon EOS 300D 100-1600

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Nikon D810A
Lens compatibility chart for Canon EOS 300D

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Nikon D810A can shoot up to 5 pictures per seconds and Canon EOS 300D can shoot up to 2,5 pictures per seconds.

Camera FPS (Frames per second)
Nikon D810A 5
Canon EOS 300D 2,5

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

When comparing these two cameras there is only one of them that can shoot movies and that is Nikon D810A. Unfortunately Canon EOS 300D does not support recording movies and movie clips.


The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Nikon D810A weighs 880 gr (equal to 1,94 lb) which is 36% heavier than Canon EOS 300D and its 645 gr (or 1,42 lb).

Camera Weight
Nikon D810A 880 gr
1,94 lb
Canon EOS 300D 645 gr
1,42 lb